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Strain, sex, and environment effects on appetitively and aversively motivated learning tasks
Author(s) -
Freeman Betty Jo,
Ray Oakley S.
Publication year - 1972
Publication title -
developmental psychobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 93
eISSN - 1098-2302
pISSN - 0012-1630
DOI - 10.1002/dev.420050203
Subject(s) - psychology , task (project management) , strain (injury) , developmental psychology , maturity (psychological) , cognitive psychology , biology , anatomy , management , economics
Two strains of rats (Zivic‐Millers and F‐344s) were reared in either an enriched or isolated environment for 60 days (experiment I) or 27 days (experiment II). At maturity, independent groups of subjects were tested on both appetitively and aversively motivated learning tasks. The results indicated that the effects of early rearing conditions on later behavior were both task and strain specific. Passive avoidance and appetitively motivated tasks were more sensitive to the early experience variable whereas active avoidance tasks were more sensitive to the genetic variable.